Icon for a portion of a display screen



The FIGURE is a front view of an icon for a portion of a display screen showing our new design.

The broken line showing of a display screen is for illustrative purposes only and forms no part of the claimed design. The contrasting appearance of shading in regions of the claim represents a contrast of color and no specific colors are herein claimed. 

The ornamental design for an icon for a portion of a display screen, as shown and described. 